162306a36Sopenharmony_ci# SPDX-License-Identifier: GPL-2.0 262306a36Sopenharmony_ci 362306a36Sopenharmony_cimenu "Host processor type and features" 462306a36Sopenharmony_ci 562306a36Sopenharmony_cisource "arch/x86/Kconfig.cpu" 662306a36Sopenharmony_ci 762306a36Sopenharmony_ciendmenu 862306a36Sopenharmony_ci 962306a36Sopenharmony_ciconfig UML_X86 1062306a36Sopenharmony_ci def_bool y 1162306a36Sopenharmony_ci select ARCH_BINFMT_ELF_EXTRA_PHDRS if X86_32 1262306a36Sopenharmony_ci select DCACHE_WORD_ACCESS 1362306a36Sopenharmony_ci 1462306a36Sopenharmony_ciconfig 64BIT 1562306a36Sopenharmony_ci bool "64-bit kernel" if "$(SUBARCH)" = "x86" 1662306a36Sopenharmony_ci default "$(SUBARCH)" != "i386" 1762306a36Sopenharmony_ci 1862306a36Sopenharmony_ciconfig X86_32 1962306a36Sopenharmony_ci def_bool !64BIT 2062306a36Sopenharmony_ci select ARCH_32BIT_OFF_T 2162306a36Sopenharmony_ci select ARCH_WANT_IPC_PARSE_VERSION 2262306a36Sopenharmony_ci select MODULES_USE_ELF_REL 2362306a36Sopenharmony_ci select CLONE_BACKWARDS 2462306a36Sopenharmony_ci select OLD_SIGSUSPEND3 2562306a36Sopenharmony_ci select OLD_SIGACTION 2662306a36Sopenharmony_ci 2762306a36Sopenharmony_ciconfig X86_64 2862306a36Sopenharmony_ci def_bool 64BIT 2962306a36Sopenharmony_ci select MODULES_USE_ELF_RELA 3062306a36Sopenharmony_ci 3162306a36Sopenharmony_ciconfig 3_LEVEL_PGTABLES 3262306a36Sopenharmony_ci bool "Three-level pagetables" if !64BIT 3362306a36Sopenharmony_ci default 64BIT 3462306a36Sopenharmony_ci help 3562306a36Sopenharmony_ci Three-level pagetables will let UML have more than 4G of physical 3662306a36Sopenharmony_ci memory. All the memory that can't be mapped directly will be treated 3762306a36Sopenharmony_ci as high memory. 3862306a36Sopenharmony_ci 3962306a36Sopenharmony_ci However, this it experimental on 32-bit architectures, so if unsure say 4062306a36Sopenharmony_ci N (on x86-64 it's automatically enabled, instead, as it's safe there). 4162306a36Sopenharmony_ci 4262306a36Sopenharmony_ciconfig ARCH_HAS_SC_SIGNALS 4362306a36Sopenharmony_ci def_bool !64BIT 4462306a36Sopenharmony_ci 4562306a36Sopenharmony_ciconfig ARCH_REUSE_HOST_VSYSCALL_AREA 4662306a36Sopenharmony_ci def_bool !64BIT 4762306a36Sopenharmony_ci 4862306a36Sopenharmony_ciconfig GENERIC_HWEIGHT 4962306a36Sopenharmony_ci def_bool y 50